9mm revolver

[OkayShooter]

Alfa ain't too bad, but its hellish to get good moonclips for it. Always scrubbing the cylinders because I find they get sticky alot.

 

[fire@will]

Curious. What is the downside for S&W, to make the cylinder fill the inside of the frame, so it doesn't leave that large (and goofy looking) space, between the end of the cylinder and the inside of the frame ?

 

[m39a2]

Bullet already has to "Jump" from the end of the casing to the throat or forcing cone, longer cylinder mean more jump. Alpha comes either way, with a long cylinder and with a short cylinder with the barrel set back in the frame to mate.

Scott

 

[Rey]

I love the JM s&w. Those moonclips though makes you go through ammo rather quickly when you have a few dozen ready in advance.

 

[fire@will]

Bullet already has to "Jump" from the end of the casing to the throat or forcing cone, longer cylinder mean more jump. Alpha comes either way, with a long cylinder and with a short cylinder with the barrel set back in the frame to mate.

Scott

Thanks, Scott. I understand that - I just don't see how that extra little "jump" would adversely affect the internal ballistics of the bullet.

 

[VanMan]

Thanks, Scott. I understand that - I just don't see how that extra little "jump" would adversely affect the internal ballistics of the bullet.

One of the considerations for a "performance" revolver is minimizing the mass of the cylinder. Probably cheaper to make that titanium cylinder shorter too.

 

[BCRider]

Curious. What is the downside for S&W, to make the cylinder fill the inside of the frame, so it doesn't leave that large (and goofy looking) space, between the end of the cylinder and the inside of the frame ?

The frames also fit the cylinders for the .357Mag option. Using short cylinders means that the bullet jump to the rifling is shorter than it would be otherwise. Also making them shorter lightens the cylinder so there's less inertial mass as it is used. Keep in mind that the main use of these is for competitions where the shooter typically shoots in double action quite rapidly. So a lighter cylinder indexes easier and stops more easily once it engages the stop bolt. So all in all while the look might not seem right the short cylinder is very much a case of form following function and is a good thing.

 

[fire@will]

The frames also fit the cylinders for the .357Mag option. Using short cylinders means that the bullet jump to the rifling is shorter than it would be otherwise. Also making them shorter lightens the cylinder so there's less inertial mass as it is used. Keep in mind that the main use of these is for competitions where the shooter typically shoots in double action quite rapidly. So a lighter cylinder indexes easier and stops more easily once it engages the stop bolt. So all in all while the look might not seem right the short cylinder is very much a case of form following function and is a good thing.

Makes sense. Thank you.